To answer the original question(s), most Czechs immigrating to the Midwest (Nebraska, etc.) came through New York or Baltimore. You do get random groups coming in through Philadelphia, Canada, and Galveston, but the journey to Nebraska from Galveston was not easy in the early days. Coming from the east to the Midwest was easier, because of the railroads.
I have located Franz Chleborad 1886 in Ancestry. I used Fran* C*borad for the search name and he was the only hit. This is of interest to me, because there are Chleborads in my hometown in northwestern Kansas, and I find them in my various ancestral villages, too.
The wildcard Fran* will allow the search to pick up Frank, Franz, or Frantisek, taking care of the language problem. Franz Chleborad is the 4th entry on the attached page.